2038391389 has 2 divisors, whose sum is σ = 2038391390. Its totient is φ = 2038391388.

The previous prime is 2038391351. The next prime is 2038391401. The reversal of 2038391389 is 9831938302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2036265625 + 2125764 = 45125^2 + 1458^2 .

It is a cyclic number.

It is not a de Polignac number, because 2038391389 - 2¹³ = 2038383197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2038391489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1019195694 + 1019195695.

It is an arithmetic number, because the mean of its divisors is an integer number (1019195695).

Almost surely, 2^2038391389 is an apocalyptic number.

It is an amenable number.

2038391389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2038391389 is an equidigital number, since it uses as much as digits as its factorization.

2038391389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 2038391389 is about 45148.5480275944. The cubic root of 2038391389 is about 1267.9316963493.

The spelling of 2038391389 in words is "two billion, thirty-eight million, three hundred ninety-one thousand, three hundred eighty-nine".